Identification

XO-1.75 Hinge Cover

XO-1.75 laptops have seven small raised dots on the hinge cover, arranged in two rows. XO-1 laptops have a smooth hinge cover, and XO-1.5 laptops have three small raised dots inline on each side of the hinge cover.
Open Firmware cpu-model OLPC 1C2

Two version of C2 were built (SKUs 203 and 204), testing out various alternate component suppliers. From a software and functionality point of view, however, these should be identical. They differ in the amount of NAND Flash and SDRAM provided (8GB/1GB vs. 4GB/512MB), as well as the keyboard (traditional or our improved membrane).